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Schamberg's disease is caused by leaky blood vessels near the surface of the skin, capillaries, which allow red blood cells to slip through into the skin. [3] The red blood cells in the skin then fall apart and release their iron, which is released from hemoglobin. [3] The iron causes a rust color and this accounts for the orange tint of the ...
What it looks like: Flea bites appear most often on the feet, ankles, and lower legs, per Cleveland Clinic. After a flea bites you, a small, discolored bump forms and a discolored ring or halo may ...
Large blood blister on right foot. A blood blister is a type of blister that forms when subdermal tissues and blood vessels are damaged without piercing the skin. It consists of a pool of lymph, blood and other body fluids trapped beneath the skin. If punctured, it suppurates a dark fluid.
Dilated blood vessels can also develop on the legs, although when they occur on the legs, they often have underlying venous reflux or "hidden varicose veins" (see Venous hypertension section below). When found on the legs, they are found specifically on the upper thigh, below the knee joint and around the ankles.
Stasis dermatitis is diagnosed clinically by assessing the appearance of red plaques on the lower legs and the inner side of the ankle. Stasis dermatitis can resemble a number of other conditions, such as cellulitis and contact dermatitis, and at times needs the use of a duplex ultrasound to confirm the diagnosis or if clinical diagnosis alone is not sufficient.
Bruise colors vary from red, blue, or almost black, depending on the severity of broken capillaries or blood vessels within the bruise site. Broken venules or arterioles often result in a deep blue or dark red bruise, respectively. Darker colored bruises may result from a more severe bleeding from both blood vessels.
Corona phlebectatica is a cutaneous sign of chronic venous insufficiency, characterized by abnormally dilated veins around the ankle. [1] It is characterised by the presence of abnormally visible cutaneous blood vessels at the ankle with (a) venous cups, (b) blue and red telangiectasis, and (c) capillary stasis spots. [1]
A biopsy may reveal red blood cells leaking from the vessels and endothelial cell swelling. [12] Golfer's vasculitis is a form of cutaneous vasculitis which manifests in palpable purpura or infiltrated erythema. [13] In a case-control study of exercise-induced vasculitis in hikers, a biopsy showed that leukocytoclastic vasculitis was present. [16]